Community Profile

# Michael Eldredge

Actif depuis 2017

All

#### Content Feed

Afficher par

A résolu

Better bullseye matrix
<http://www.mathworks.com/matlabcentral/cody/problems/18-bullseye-matrix Problem 18> asks to create a bullseye matrix like this:...

plus de 3 ans il y a

A résolu

Angle between Two Vectors
The dot product relationship, a dot b = | a | | b | cos(theta), can be used to determine the acute angle between vector a and ve...

plus de 3 ans il y a

A résolu

Parasitic numbers
Test whether the first input x is an n-parasitic number: <http://en.wikipedia.org/wiki/Parasitic_number>. ( _n_ is the second in...

plus de 3 ans il y a

A résolu

Choose the best fitting dominoes
You will be given a cell array of nx2 matrices. Choose one row from each matrix. These are the ordered pairs that will be plac...

plus de 3 ans il y a

A résolu

Solitaire Cipher
Implement the <http://en.wikipedia.org/wiki/Solitaire_(cipher) solitaire cipher>. Since this is from Wikipedia, I am capturin...

plus de 3 ans il y a

A résolu

Project Euler: Problem 3, Largest prime factor
The prime factors of 13195 are 5, 7, 13 and 29. What is the largest prime factor of the number being input, input might be ui...

plus de 3 ans il y a

A résolu

N-Queens Checker
Picture a chessboard populated with a number of queens (i.e. pieces that can move like a queen in chess). The board is a matrix,...

plus de 3 ans il y a

A résolu

Find Index of maximum Value and maximum Value of a vector
Find the Index of the first occurrence of the maximum value in a vector and also the maximum value in the vector. Example: [...

plus de 3 ans il y a

A résolu

Given input in radians, output to degrees

plus de 3 ans il y a

A résolu

Basic arrays operations.
Apply element-by-element binary operation 'fun' to two arrays (A and B).

plus de 3 ans il y a

A résolu

Find the product of a Vector
How would you find the product of the vector [1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0] times 2?; x = [1 : 0.5 : 6]; y ...

plus de 3 ans il y a

A résolu

Generate a string like abbcccddddeeeee
This is the string version of Problem 1035. <http://www.mathworks.com/matlabcentral/cody/problems/1035-generate-a-vector-like-1-...

plus de 3 ans il y a

A résolu

Volume and area of a sphere
Input(r) - radius Output([v,s]) - volume and area

plus de 3 ans il y a

A résolu

Sophie Germain prime
In number theory, a prime number p is a *Sophie Germain prime* if 2p + 1 is also prime. For example, 23 is a Sophie Germain prim...

plus de 3 ans il y a

A résolu

Circumscribed circles
Given the lengths of the 3 sides of a triangle, output the radius of the circumscribed circle. Example: [3 4 5] -> 2.5

plus de 3 ans il y a

A résolu

Vertical matrix sort
Given a matrix x with n rows and m columns, return a matrix y with 2n rows and m columns, such that every column in x is sorted ...

plus de 3 ans il y a

A résolu

Divisible by 4
Pursuant to the <http://www.mathworks.com/matlabcentral/cody/problems/42404-divisible-by-2 first problem> in this series, this o...

plus de 3 ans il y a

A résolu

Sum of series I
What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

presque 4 ans il y a

A résolu

Sum the squares of numbers from 1 to n
For a given value of n return the sum of square of numbers from 1 to n. Example For n = 2 then sum of squares = 5 (1^2 + ...

presque 4 ans il y a

A résolu

Largest Twin Primes
<http://en.wikipedia.org/wiki/Twin_prime Twin primes> are primes p1, p2 = p1 + 2 such that both p1 and p2 are prime numbers. Giv...

presque 4 ans il y a

A résolu

Construct a string from letters and counts
Given two input arrays like this: [5,3,1] ['a','b','c'] Output a string that contains each letter the specified num...

presque 4 ans il y a

A résolu

Create an anti-identity matrix
Create an anti-identity matrix of given dimension. Examples n = 2 A = [0 1; 1 0] n = 3 A = [0 0 1; 0 1 0; 1 0 0...

presque 4 ans il y a

A résolu

Vectorizing, too easy or too hard?
Please insert a . before any ^, * or / in the string. That's it!!

presque 4 ans il y a

A résolu

Cody Matlab Version
What is the current Cody Matlab Release? *Output:* string *Examples:* '(R2012a)' or 'R2012a' Hint: We have mo...

presque 4 ans il y a

A résolu

Minefield Sonar
*Background* In mine-hunting games (e.g. Microsoft Minesweeper), the user is provided with a covered grid that, upon a left c...

presque 4 ans il y a

A résolu

Gauss Eliminate 2-by-2 example
Use forward elimination to make the coefficient matrix, A, an upper triangular matrix, and then solve using back substitution, f...

presque 4 ans il y a

A résolu

Determine the length of a string of characters
Determine the length of a string of characters

presque 4 ans il y a

A résolu

Square the input
Given a scalar or vector x, return the square of each element. Example x = [7 2] answer = [49 4]

presque 4 ans il y a

A résolu

UICBioE240 problem 1.18
exp(pi/5*i) and exp(pi/5i). Is there any difference in result? Write yes or no as a string.

presque 4 ans il y a

A résolu

Matlab Basics - Set unwanted parts of a vector to zero
Consider a vector x, of length >= 7, write a script to set elements 2, 5, and 6 to zero. Example x = [1 2 3 4 5 6 7] --> ...

presque 4 ans il y a